ΔU=0 in Isothermal Process


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Hank Wang 2J
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Joined: Fri Sep 25, 2015 3:00 am

ΔU=0 in Isothermal Process

Postby Hank Wang 2J » Tue Jan 26, 2016 11:23 pm

I know this may sound simple but can someone explain to me why ΔU is equal to zero under conditions of constant temperature? Thanks!

Jonathan Shih 3H
Posts: 37
Joined: Fri Sep 25, 2015 3:00 am

Re: ΔU=0 in Isothermal Process

Postby Jonathan Shih 3H » Wed Jan 27, 2016 3:32 am

As Dr. Lavelle addressed in class, looking at your question strictly mathematically, recall that delta U, change in internal energy, is also equal to 3/2nRdeltaT. So when the process is isothermal, indicating no change in T and therefore a delta T of 0, then essentially we have delta U=3/2nR(0), which equals to 0.


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